#!/usr/bin/node

const user={
  name:'fumei',
  age:19,
  qq:'1524900609'
};
const log=console.log;

log('name:%s',user.name);

log('age:%d',user.age);

log('qq；%s',user.qq);

log(`qq:${user.qq}`);

console.error('Error!,something wrong!');

